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perf(volcano): preserve source quality for inline retry images
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Your Name 2026-02-19 04:35:46 +08:00
parent bfec61aad1
commit cbad5ee2e2
1 changed files with 6 additions and 1 deletions
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7
lib/ai/providers/volcano-vision.ts
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@ -53,6 +53,11 @@ async function fetchImageAsDataUri(url: string): Promise<string | null> {
const inputMime = response.headers.get("content-type") || guessImageMimeTypeFromUrl(url); const inputMime = response.headers.get("content-type") || guessImageMimeTypeFromUrl(url);
// 优先保留原图，避免 base64 回退路径带来明显画质损失
if (buffer.length <= 6 * 1024 * 1024) {
return `data:${inputMime};base64,${buffer.toString("base64")}`;
}
try { try {
const sharp = await import("sharp"); const sharp = await import("sharp");
const optimized = await sharp.default(buffer) const optimized = await sharp.default(buffer)
@ -61,7 +66,7 @@ async function fetchImageAsDataUri(url: string): Promise<string | null> {
fit: "inside", fit: "inside",
withoutEnlargement: true, withoutEnlargement: true,
}) })
.jpeg({ quality: 86, mozjpeg: true }) .jpeg({ quality: 90, mozjpeg: true })
.toBuffer(); .toBuffer();
return `data:image/jpeg;base64,${optimized.toString("base64")}`; return `data:image/jpeg;base64,${optimized.toString("base64")}`;
} catch { } catch {